AUTOMATIC SELECTION OF REDUNDANCIES

被引：10

作者：

DOMASZEWSKI, M

BORKOWSKI, A

机构：

[1] Institute of Fundamental Technological Research, 00-049 Warsaw

来源：

COMPUTERS & STRUCTURES | 1979年 / 10卷 / 04期

关键词：

D O I：

10.1016/0045-7949(79)90002-6

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

In the finite element force method the stresses are related to the external loads by the matrix equation of equilibrium. This equation allows the reduction of total number of variables since a stress field can be described in terms of independent (redundant) parameters. Such a selection is used in the elastic force method as well as in the limit analysis. An optimal choice of redundancies which corresponds to the best accuracy of a numerical procedure solving the underdeterminate system of equilibrium equations is sought. The results of a numerical comparison between the various techniques used for an automatic selection of redundancies are presented for a series of frame and truss problems. © 1979.

引用

页码：577 / 582

页数：6

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